TY  - BOOK
AU  - Ball, V. Elton
AU  - Norton, George W.
TI  - Agricultural productivity : measurement and  sources of growth
SN  - 0792376226
U1  - 338.160973 
PY  - 2002///
CY  - Boston
PB  - Kluwer Academic Publishers
KW  - Agricultural prices-United  States-Statistics
KW  - Agriculture-Economic aspects-United  States-Statistics
KW  - Aricultural productivity-United States-  Statistics
N1  - SR
ER  -